Four Seasons 73775 HVAC Mode Door Actuator - Main

Overview

Four Seasons 73775 is an HVAC mode door actuator for climate control systems that use an arm-style door linkage and a 5-pin electrical connection. It is built for direct replacement use in compatible Mazda applications, including Mazda 5 and Mazda 3 models listed below.

Key Features

• HVAC air door actuator for mode control operation
• Arm-style door linkage for the specified application
• 5-terminal pin configuration
• Four Seasons part number 73775
• Cross-references BP4M61A70A for the same application

Detailed Description

This Four Seasons HVAC mode door actuator, part number 73775, is used in climate control systems to move the air door that directs cabin airflow. The arm linkage and 5-pin design match the listed factory-style application requirements, making it a practical replacement for restoring proper vent, floor, or defrost mode operation where the original actuator has failed. Compatible With 2012-2015 Mazda 5, Main; 2006-2010 Mazda 5, Main; and 2006-2009 Mazda 3, N/A. Four Seasons 73775 is backed by the company’s long history in mobile A/C and HVAC components, with products engineered and tested for dependable operation.

Common Issues This Part May Resolve

• Airflow stuck on one vent setting
• Inconsistent mode changes between dash, floor, and defrost outlets
• Clicking or binding from a worn actuator
• Loss of proper HVAC door movement

Installation Notes and Tips

Verify the connector style, terminal count, and door linkage style before installation. Match the vehicle’s listed fitment and position notes exactly, since HVAC actuators are application-specific. After installation, cycle the climate controls to confirm smooth door movement and correct airflow direction.

Quality Assurance

Four Seasons engineers and tests its products for trouble-free operation, drawing on more than 50 years of mobile A/C experience. Part number 73775 is a direct replacement-style HVAC actuator for the listed applications.